HP-UX Reference (11i v2 07/12) - 1M System Administration Commands N-Z (vol 4)

p
pcnfsd(1M) pcnfsd(1M)
NAME
pcnfsd: rpc.pcnfsd - PC-NFS authentication and print request server
SYNOPSIS
/usr/sbin/rpc.pcnfsd
DESCRIPTION
pcnfsd is an RPC server that supports ONC clients on PC (DOS, OS/2, Macintosh, and other) systems.
This describes version two of the pcnfsd server.
pcnfsd can be started from the /sbin/init.d/nfs.server
startup script by setting the
PCNFS_SERVER variable to 1 in /etc/rc.config.d/nfsconf
, or from the inetd daemon (see
inetd(1M)). It reads the configuration file
/etc/pcnfsd.conf
, if present, and services RPC requests
directed to program number 150001. The
pcnfsd daemon supports version 1 and version 2 of the
PCNFSD protocol.
A fixed port can be specified for
pcnfsd by adding a line to the /etc/pcnfsd.conf
file in the form:
port port_number
The port number can have any value between 1 and 65535. After adding the line for specifying the fixed
port to the /etc/pcnfsd.conf
file, pcnfsd must be restarted for this to take effect. This feature can
be disabled by deleting or commenting out the line specifying the fixed port from the
/etc/pcnfsd.conf file and restarting
pcnfsd.
The requests serviced by
pcnfsd fall into three categories: authentication, printing, and other. Only the
authentication and printing categories have administrative significance.
Authentication
When pcnfsd receives a PCNFSD_AUTH or PCNFSD2_AUTH request, it will "log in" the user by validat-
ing the user name and password, returning the corresponding user ID, group IDs, home directory, and
umask. It will also append a record to the wtmp data base (see wtmp(4)). If you do not want PC "logins"
recorded in this way, add a line to the
/etc/pcnfsd.conf
file in the form:
wtmp off
By default, pcnfsd will only allow authentication or print requests for users with user IDs in the range
101 to 60002 (this corresponds, in SVR4, to the range for nonsystem accounts). To override this, add a line
to the /etc/pcnfsd.conf
file in the form:
uidrange range [, range ]...
where each range is a user ID number in the form
uid
or an inclusive range of user ID numbers in the form
uid-uid
NOTE: pcnfsd will deny authentication if the
/etc/shells file is incorrectly setup.
Printing
pcnfsd supports a printing model that uses NFS to transfer print data from the client to the server. The
client system issues a PCNFSD_PR_INIT or PCNFSD2_PR_INIT
request, and the server returns the
path to a spool directory that is exported by NFS for use by the client.
pcnfsd creates a subdirectory for
each client. By default, the parent directory is /var/spool/pcnfs, and the name of each subdirectory
is the same as its client’s host name. To use a different parent directory, add a line to the
/etc/pcnfsd.conf file in the form:
spooldir path
Once a client has mounted the spool directory using NFS, and transferred print data to a file in that direc-
tory, it will issue a PCNFSD_PR_START or PCNFSD2_PR_START
request. pcnfsd handles most
print-related requests by constructing a command based on the printing services of the server’s operating
system, and executing that command using the identity of the PC user. Because this involves set-user-ID
privileges,
pcnfsd must be run as root.
Every print request from a client includes the name of the printer to be used. This name corresponds to a
printer that has been configured into the line printer spooling system using the lpadmin command.
HP-UX 11i Version 2: December 2007 Update − 1 − Hewlett-Packard Company 145